JavaScript Engineer

About Constructor

Constructor is the next-generation platform for search and discovery in ecommerce, built to optimize for metrics like revenue, conversion rate, and profit. Our in-house search engine uses transformers and generative LLMs to power search, recommendations, and shopping agents. Engineering is our largest department, and we strive to maintain our position by staying at the bleeding edge of AI.

Out of necessity, our engine scales to power over 1 billion queries every day across 150 languages and roughly 100 countries. It is used by ecommerce brands such as Sephora, Under Armour, and Petco. We value empathy, openness, curiosity, continuous improvement, and the metrics that matter. We believe empowering everyone to do what they do best leads to great outcomes. Constructor is a U.S.-based company founded in 2019 and led by Eli Finkelshteyn and Dan McCormick.

About You

You're a software engineer who enjoys working across the tech stack and collaborating with cross-functional teams to solve meaningful problems. You are a self-starter who can navigate ambiguity, triage issues, and focus on what matters most. You enjoy partnering with engineers, product managers, data scientists, and designers to build scalable, user-focused solutions. You care about writing clean, maintainable code and are committed to learning, growth, and contributing to a strong team culture.

About The Position

As a JavaScript engineer on the Customer Data Integrations team, you will build tools and systems that help customers integrate with our platform more effectively. This includes developing dashboards, improving behavioral tracking, and creating monitoring and alerting systems to surface issues proactively. Your work will improve data visibility, reduce manual troubleshooting, and increase confidence in integration health.

You will also directly support customers with technical guidance, validate integration quality, and help ensure successful launches. You'll collaborate with internal teams to turn common integration challenges into scalable solutions.

Responsibilities

• Act as a technical partner to customers during onboarding and integration, offering guidance through calls and hands-on collaboration
• Assist customers asynchronously by troubleshooting, reviewing implementations, and validating data quality while proactively monitoring integration health
• Work with integration-focused teams to identify recurring issues and develop scalable solutions
• Build and maintain internal tools to improve visibility into customer integrations (dashboards and data-quality/health systems)
• Support the evolution of our event tracking capabilities for reliable data collection
• Contribute to documentation, training materials, and developer resources for customers and internal teams
• Collaborate with Product, Customer Success, and other engineering teams to shape the future of integrations

Requirements

• Minimum two years of professional and/or academic experience in software engineering
• Strong communication and interpersonal skills; comfortable working directly with customers and across teams
• Enjoy solving new problems daily and partnering with internal teams
• Proficient in JavaScript, with experience building applications using React and server-side technologies like Node.js (TypeScript a plus)
• Solid understanding of front-end fundamentals (DOM parsing/manipulation, browser debugging)
• Familiarity with dashboards, monitoring systems, or data visualization tools is a plus
• Quick learner with the ability to adapt to new technologies and evolving integration challenges
• Comfortable troubleshooting complex issues, validating data quality, and translating feedback into scalable solutions
• Bonus: experience with data querying/manipulation tools (e.g., OpenSearch, ClickHouse, SQL)
• Ability to work between PST and GMT+1 time zones

Benefits

• Unlimited vacation time with a recommended minimum of 3 weeks per year
• Fully remote team
• Work-from-home stipend
• Apple laptops provided for new employees
• Annual training and development budget
• Maternity & Paternity leave for qualified employees
• Competitive base salary range ($80k-$120k USD) with variation based on qualifications
• Regular team offsites

Diversity, Equity, and Inclusion

Constructor.io is committed to a diverse, equitable, and inclusive work environment. We are an equal opportunity employer and welcome applicants from all backgrounds. We provide equal opportunities regardless of education, diversity of opinion, race, color, religion, gender, gender expression, sexual orientation, national origin, genetics, disability, age, veteran status, or other protected status. Studies have shown that women and people of color may be less likely to apply unless they meet every qualification; we encourage you to apply even if you don't meet all listed qualifications.

Seniority level

• Entry level

Employment type

• Full-time

Job function

• Software Development

Industries

• IT Services and IT Consulting

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